Editing 555 timer IC (section)

==Packages==
[[File:NE555 DIP & SOIC.jpg|thumb|right|Texas Instruments NE555 in [[Dual in-line package|DIP]]-8 and SO-8 packages<ref name="TI_NE555_Datasheet"/>]]

In 1972, [[Signetics]] originally released the 555 timer in [[Dual in-line package|DIP]]-8 and [[TO-5|TO5]]-8 metal can packages, and the 556 timer was released in a DIP-14 package.<ref name="Signetics_1972_Linear1_Databook"/>

In 2006, the dual 556 timer was available in through-hole packages as DIP-14 (2.54&nbsp;mm pitch),<ref name="TI_NE556_Datasheet"/> and surface-mount packages as SO-14 (1.27&nbsp;mm pitch) and SSOP-14 (0.65&nbsp;mm pitch).

In 2012, the 555 was available in through-hole packages as DIP-8 (2.54&nbsp;mm pitch),<ref name="JRC_NJM555_Datasheet"/> and surface-mount packages as SO-8 (1.27&nbsp;mm pitch), SSOP-8 / [[Small Outline Integrated Circuit|TSSOP]]-8 / VSSOP-8 (0.65&nbsp;mm pitch), [[Ball grid array|BGA]] (0.5&nbsp;mm pitch).<ref name="TI_NE555_Datasheet"/>

The MIC1555 is a [[CMOS]] 555-type timer with three fewer pins available in [[Small-outline transistor|SOT23]]-5 (0.95&nbsp;mm pitch) surface-mount package.<ref name="Microchip_MIC1555_Datasheet"/>